Process for treating coal tailings

Details Process for treating coal tailings Process for treating coal tailings

C - Chemistry, Metallurgy

10

B

C10B 53/04 (2006.01) B03B 9/00 (2006.01) C10B 47/00 (2006.01) C10B 49/00 (2006.01) C10B 57/02 (2006.01) C10B 57/10 (2006.01) C10L 9/00 (2006.01) C10L 9/08 (2006.01)

Patent

CA 2251804

A process for the recovery of coal particles from coal tailings is described. The process comprises the steps of initially treating the coal tailings to separate therefrom a proportion of the coal particles having sizes in a specified range, and then subjecting the coal particles to a heat treatment process. In one embodiment, the separated coal particles can undergo an agglomeration in oil prior to the heat treatment. The process provides a further means of recovering coal particles of certain sizes from slurries.

On décrit un procédé de récupération de particules de charbon à partir de résidus de charbon, lequel comprend les étapes consistant à d'abord traiter ces résidus pour séparer de ceux-ci une certaine proportion de particules de charbon possédant des dimensions se situant dans une gamme spécifiée, puis à soumettre ces particules à un processus de traitement thermique. Dans un mode de réalisation, on peut, avant le traitement thermique, faire s'agglomérer les particules de charbon dans de l'huile. Ce procédé comporte en outre des moyens de récupération de particules de charbon de certaines dimensions, à partir de bouillies de charbon.

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